Improvement in rotary engines



T. SWINBURN.

ROTARY-ENGINE. No.171,704.-.. Patented Jan.4,18-76.

ATTORNEYS.

N. PETERS. PNOTO-UTHOGRAPHER, WASHKNGTON. D. C.

UNITED STATES PATENT QFFICE.

THOMAS SWINBURN, OF oH RLEsToN, WEST VIRGINIA.

IMPROVEMENT IN ROTARY ENGINES.

Specification forming part of Letters Patent N o. 1 71,704, datedJanuary 4,1876; application filed June 12, 1875.

To all whom it may concern:

Be it known that I, THOMAS SWINBURN, of Oharleston, in the county ofKanawha and State of West Virginia, have invented a new and ImprovedRotary Steam-Engine, of which the following is a specification:

The invention will first be described in connection With drawing, andthen pointed out in the claim.

Figure l is a side elevation of my improved engine with one of the headsremoved, and Fig. 2 is a sectional elevation in the line of the axis.

Similar letters spending parts.

A is the stationary disk, in which are two steam-ways, B, one on eachside, the bottoms being ecliptical to the faces of the disk, so that atone point, 0, the ways vanish in the surface to break the continuity forcutting 05 the steam. The ports E are at the extremities of the cut-offsG. F represents the pistons, which are arranged in the slots G of theheads H, to swing into and (int of the grooves as they revolve with theheads, which fit steamof reference indicate corretight against the sidesof the disk. They are connected by an arm, I, with the shaft J, the theslot G to the shaft, the shaft for a center to arm extending along andbeing pivoted to swing on, although they'may be pivoted to the disk, andthey may be arranged without a pivot, being controlled entirely by theslots. In this case they all have a spring-arm, by which they areconnected to a vibrating oen; ter-bloek, K, pivoted in a slot, L, in theshaft, the spring-arms being to swing them into the steam-ways; but theymay be forced in by steam admitted to the slots behind them.

Instead of having the slot in the shaft the pistons of one side of theshaft may be independent'of those on the other side, and they may alsobe independent of each other or connected together, as maybe desired,and various other modifications may be made without departing from thespirit of the invention.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- A rotary engine whose cylinder is provided with aconcentric groove arranged obliquely in its end, and a piston, workingfrom a fixed center concentric with said groove, as shown and described.

THOMAS SWINB URN. Witnesses S. S. MOORE, S. L. WEBB.

